Safety devices for windows and doors

ABSTRACT

A safety device comprising a system of two rigid bars pivotally connected, each bar having two hooks, the bars pivoting between two positions, one in which the safety device cannot be removed from two adjacent rings, the distance between which can vary, the other in which the safety device can be inserted or removed from said rings.

O Umted States Patent 1191 1111 3,843,179 Reck Oct. 22, 1974 [5 SAFETY DEVICES FOR WINDOWS AND 1,875,400 9/1932 Wood 24/232 DOORS 3,638,283 2/1972 Moretti 24/73 HR [76] inventor: S vend Christian Reck, Karlebo, FOREIGN PATENTS OR APPLICATIONS 2 8 Kokke Denmark 41,443 12/1929 Denmark 292/288 [22] Filed: Feb. 5, 1973 P E J h H M G1 rzmary xamznerosep c ynn [211 App]' 329,897 Assistant Examiner-Richard P. Tremblay [52] US. Cl. 292/263, 292/288, 24/73 HR, 57 ABSTRACT 24/242 [51 Int. Cl. E05: 17/32 Safety devlce a 0f bars [58] Field of Search 292/262 263 264 268 plvotally connected, each bar havmg two hooks, the 292/269 24/73HR bars pivoting between two positions, one in which the A 232 i safety device cannot be removed from two adjacent rings, the distance between which can vary, the other [56} References Cited in which the safety device can be inserted or removed UNITED STATES PATENTS Shaw ..,292/263 from said rings.

1 Claim, 4 Drawing Figures 1 SAFETY DEVICES FOR WINDOWS AND DOORS This invention relates to safety devices used for preventing entry through a door or window opening, (for window hereinafter read door or window), and the purpose of which is to provide a versatile device which is quickly attachable and detachable when the window is closed and automatically cannot be detached when the window is being opened.

To prevent entry through a door opening it is common to use the so called safety chain. Another known safety device consists of a scissor-shaped grabbing device and a door lock whose bolt is so formed that the grabbing device can grab and hold it when the door is opened. Among the disadvantages with the above devices are that they can be unscrewed if the opening of the door is sufficiently wide to allow an arm to pass through, also as each one must be regarded as a fixed installation it cannot easily be transferred from one place to another.

Also known is a device for securing window-blinds to each other so they can be held in a more or less open position, consisting of two arms having hooked ends and pivoted together and provided at their pivot with an adjustable locking mechanism, however this device can only be used as a safety device, with the purpose of preventing entry through a window opening, if the locking mechanism is made so it cannot be unlocked from the outside when the window is open, in which case it would be necessary to unlock the locking mechanism each time the window had to be closed.

The invention as claimed, a safety device comprising a system of bars with one or two pairs of hooks where, regardless of which pair, the hooks making a pair can rotate in relation to each other around the same pin, and are formed and facing each other in such a manner that the beak of one of the hooks will be free of the other hook when the two hooks are rotated away from each other, and enclosed on its three sides by the second hook when the hooks are rotated against each other.

The safety device comprising two pairs of hooks can when a window is closed, be attached to and detached from, with a. single movement, two rings, one of which is mounted on the window and the other on the corresponding window-frame, but automatically cannot be detached from the two rings when the window is being opened.

In drawings which illustrate an embodiment of the invention,

FIG. 1 is a front view'of the embodiment,

FIG. 2 is a side view of the embodiment,

FIG. 3 is an end view of the embodiment and FIG. 4 is a front view of the embodiment seen in a window.

The safety device illustrated comprises a bar 1 and a bar 2, both identical, and a rivet 3 pivotally connecting the two bars to each other. A part of each bar is formed as a hook H /H and another part as a hook R /R A ringscrew X screwed into a window, illustrated in FIG. 4, and another ringscrew Y screwed into the corresponding window-frame are used as attachments for the safety device. When the window is open the hooks R, and R will be blocking the open beak of each of the hooks H and H respectively, thus making it impossible to unscrew the ringscrews and to remove the safety device from the ringscrews, and when the window is closed the hooks R and R will be pivotally removed from the beak of each of the hooks H and H respectively so the tips of the beaks can be inserted and removed from the ringscrews.

What is claimed is:

l. A safety device for use with a window and windowframe, a ringscrew mounted in each of said window and said window-frame, said device comprising a system of two rigid bars, each bar having a first hook and a second hook, each of said second hooks having a tip defining an open beak, a rivet pivotally connecting the two bars to each other, said rivet passing through each bar between said first and second hooks, each said tip extending through one of said ringscrews, said bars pivoting between two positions, the first hook of each bar extending from the rivet to the tip of the other bar in a first position, thereby blocking each open beak, the first hook of each bar pivotally removed from the tip of the other bar in a second position, thereby allowing each said tip to be inserted or removed from said ringscrews. 

1. A safety device for use with a window and window-frame, a ringscrew mounted in each of said window and said window-frame, said device comprising a system of two rigid bars, each bar having a first hook and a second hook, each of said second hooks having a tip defining an open beak, a rivet pivotally connecting the two bars to each other, said rivet passing through each bar between said first and second hooks, each said tip extending through one of said ringscrews, said bars pivoting between two positions, the first hook of each bar extending from the rivet to the tip of the other bar in a first position, thereby blocking each open beak, the first hook of each bar pivotally removed from the tip of the other bar in a second position, thereby allowing each said tip to be inserted or removed from said ringscrews. 